Merge STL Online

Fast, secure and free STL merger Online



How to merge STL online?

Step 1
Upload stl-file(s)
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Step 2
Choose "stl file"
Choose stl or any other format you need as a result (if applicable).
Step 3
Download/View your processed stl file
Let the file process and download/view the stl file.
** You can also open your processed stl file in our free online viewer by clicking "Open".


  • 1 ❓ How can I merger STL file?

    First, you need to add a file for merger: drag & drop your STL file or click inside the white area for choose a file. Then click the "merger" button. It will now allow you to merger your STL file.

  • 2 ⏱️ How long does it take to merger STL file?

    This mergerer works fast. You can merger STL file in a few seconds.

  • 3 🛡️ Is it safe to STL merger using free file mergerer?

    Of course! The download link of mergered file will be available instantly after processing. We delete uploaded files whithin next 24 hours and the download links will stop working after this time period. No one has access to your files. File mergerer (including STL). STL file mergerer is absolutely safe.

  • 4 💻 Can I merger STL file on Mac OS, Android or Linux?

    Yes, you can use free mergerer app on any operating system that has a web browser. Our STL mergerer works online and does not require any software installation.

  • 5 🌐 What browser should I use to merger STL?

    You can use any modern browser to merger STL, for example, Google Chrome, Firefox, Opera, Safari.

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